Controlling device for governors.



H. A. LARSON.

CONTROLLING DEVICE FOR GOVERNORS. APPLICATION FILED AFB. 9, 1908.

. Patented D60. 29, 1908.

SIIIBBTS-BHEET 1.

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H. A. LARSON.

" CONTROLLING DEVICE FOR GOVERNORS.

APPLICATION PILED APR.9,1908.

- Patented Dec. 29, 1908.

SSHEBTS-SHEET 2.

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H A LARSON CONTROLLING DEVICE FOR GOVERNORS.

APPLICATION FILED APB.9,1908.

Patented Dec. 29, 1908.

3 SHEETS-SHEET 3.

Gimme/13o v citizen of the United States,

. Nevada, have invented a new and useful ternai combustion ene so as toreduce the oon as said engine is subjeotedtoaload, the

uniform.

HARRY A. LARSON, 0F PIOCHE: NEVADA.

conraonnme nnvrcn non eovnnnons.

Patented net. as, 1908.

No. 907,823. Specification of Letter! latent. I

. a present mm April 9, 190a. sum in .tzais'z. To it my concerns A.LARSON, a resid' at Pi-. echo, in the county offLincoln and tate of Beit known that I, HARRY Controlling Device forGovernors, of which thefollowingis a specification.

This invention relates to. devices for con-g trolling governingmechanisms, and, pre 10 especially to those designed to 'con'rofihegoverning mechanism of internal cgn' 'ustion he object of the inventionis to providemeans for controllingct e governor of an inspeed of theengine w "le it is running without a load, and thus reduce theconsumption of motive-fluid, sa d means being also designed to Increasethe speed of thee gine as governor itself taking care of; an'ysli htvaries ation in the loadand maintaining t a rspeed- The inventionconsists in certain novel features of construction and arrangement ofparts, hereinafter fully described, illustrated in the accompanyingdrawings, and specificall claimed.

the accompanying drawings :-"-Figure 1, 1s a partial side elevation ofan engine with the device applied thereto. Fig.2 is a plan view of thesame. Fig. 3 is an enlarged detail side elevation of certain of theparts. Fig. 4: is a plan view of Fig. .3. Fig. 5 is a detail pen-.spectiveof the quadrant. Fi 6 iso. deta l view of a portion of the quarant? and the latch lever. Fig. 7 is a side elevation of a modificationof my device showing an arrangement for controlling the air supply bythe governor lever. Fig. 8 -is an'end view of this modification.

Simil numerals of reference are emplayed to indicate corresponding artsthroughout the several figures of the. aw-

a x y is to be noted thatthe device i's'here shown as applied to ajgasolene hoisting engine, this being typical of the class of engines onwhich it is found economical to varythe rate of'ppeed' according as theengine-isrun.v loaded or light.- Enginol ofthil tivel have'hitherto beenprovided with a ositive acting device to temporarily throw t egovernorout of service when it was desired to speed up the engine. Thishas been found not. to answer the 'urpose inasmuch as the variation ofspeed t hus obtained'is compare slight, the speed being raised from two.hun red to three hundred revolutions, and there being no provision forreducing the speed less than-two hundred revolutions.

The present invention providee a means whereby the s eed maybe variedfrom the maximum to t e of not over fifty revolutions in this particulart e ofengine. It i'etolBeunderstood that t e device may be appliedjto-tother engines with equally efiicaciousreiultszt Thezfimfinggoindicatss the bed of the '1e'."te'erlnga',j'ii lihlh flhnft12. '1' 011 i the "G'ffilk. 8'

held a-fiy' wheel 13 carm'ng centrifufiallye ctuated governing elements,here s own in the form of weighted bell crank levers 14.

Mounted upon the shaft 12 is a sleeve 15 provided with a groove or otherconnection for the end of the? centrifugallv actuated ele' mentsandtrunnions 16. U on a bracket 17 is iivotally mounted a loo out lever 18provi ed with an elongated opening near the middle thereof, as shown at19, arranged to fit} over the trunnions 16. In the form of lever hereshown, the same is arran ed with two arms which extend on either si e ofand closely embrace the sleeve 15, but it is obvious that this form maybe varied to meet the varying conditions of difierent engines.

-Mounted upon a short. shaft 20 is a cam 21 arranged to be rotated asthe crank shaft rotates, by means of cars 22, on the crank shaft, andthe short s aft. Held ad acent to i and in the-.path of this cam is abar 23. This bar 23 may be arranged to actuate the spark ing mechanism,or a portion of the valve mechanism; or such other engine controllingmeans as may be found necessary,-and the same is not to be taken asother than tiygical of an engine controilin'gmeans actuate om the cam. 4e

23 when the of the evice incl-ascents a. point beyond that desired,theroa provided- In order to stop the o oration of the bar L ever, 35 e v asto 24 arranged to contact with the end of the ock out lever 18, whenthe some is moved inwardly by the outward motion of the sleeve 15.- Now,it will. be observed that 5 as soon as the fly wheel begins to rotate,the balls 14 will tend to move apart and move the sleeve 15 in suchposition that the end of the lever 18 will contact with the stop 24. Toovercome this tendency, and to regulate the same, there has beenprovided a rock shaft having a rocker arm 26, at the end thereof,adjacent the crank shaft, said rocker arm being so arranged as to lieopposite the free endv of the-lever 18. A spring 27 is attached'to therocker arm and the free end or the lever. At a-convenient point on themachine, referably between the clutch and brake lever, is mountedv aquadrant 27'.- Upon the rock shaft 25 is carried an operatgb' or othercontrolling device wil continue to o crate until the speed reaches apoint at w lch the centrifugal effort of the balls willii, howit bedesired to lower the speed of the e, the tension of the spring 27 may beby moving the hand lever down, and e obvious that when this tension isd,-.the balls ltwill more readily move part and the bar 23 will be heldfrom-actua- 11 during a greater portion of the time. t is thus seen thatthe speed of the engine is overcome the tension of the spring.

-since any desired degree of tension may be obtained in thespring 27,while the engine is running, by the simple movement of the hand lever28.

In the modified form of device shown in Figs. 7 and 8, the rod 25 iscontinued, as shown at 30, through the engine bed. Upon the end of thisred is fixedly mounted a lever 31 carrying a link 32. The link 32 isconnected to a valve 33 in the air pipe of the engine, as indicated at-34, It Wlll be observed that, by means of this arrangement, theoporation of the lever 28 will not only serve to actuate the governingmechanism, but will also. serve to control the admission of air to pi e34.

tis obvious that many minor changesin 66 the form and construction ofthe device may be made without arting from the principles of the same.ai'id it is'not' ther sired to be confined "to the exao gtorm herein inglever 28 provided with alatch 29 ads tedompletely under the control ofthe operator,

efore, de-

shown and described, but to include all such as properly come within thescope of the inventionc W hat is claimed is it In a device of the kinddescribed, a pivotally mounted lock out lever, a governor arranged tovary the position of said lover, a spring attached to said lever, on airvalve. and means attached to said spring to vary the tension thereof andactuate said air valve.

2. in a device of the kind described, a retary member, a sleeve slidablymounted thereon, a centrii'ugally actuated element arranged to vary theposition of said sleeve on said rotary member, a pivotally mounted lockout lever arranged to be moved by said sleeve, a spring attached to saidlever, an air valve and means attached to said spring to cry the tensionthereof and actuate sai air valve.

3. in a device of the kind described, a retary member, a sleeve slidablymounted thereon, a centrifugally actuated element orto varythe positionof said sleeve on ranged said rotary member, a pivotally mounted lockout lever arranged to be moved by said sleeve, a rock shaft, a rockerarm attached to said rock shaft, a spring held between said leverand'seid rockerarm, an air valve manually operated means to rotate saidrock shaft and operating said air valve, and a locking device for saidmeans. r

4. In a device of the kind described, a rotary member, a sleeve slidablymounted thereon, a centrifugally actuated element arranged to vary theposition of said sleeve on said rotary member, a pivotally mounted lockout lever arranged to be moved by said sleeve, a rock shaft, a rockerarm attached to said rock shaft, a spring held between said lever andsaid rocker arm, an air valve a latch lever carried on said rock shaftto r0- tate said shaft, vary the tension of said spring and operate saidair valve, and a quadrant arranged in the path of said latch lever.

5. In a device of the kind described, s. rotary' member, a sleeveslidably mounted thereon, a centrifugally actuated element arranged tovary the position of said sleeve on said rotary member, a pivotally vmounted lock-out lever arranged to be moved by said sleeve, a-rockshaft, a rocker arm attached to said rock shaft, a spring held betweensaid lever and said rocker arm, a second rocker arm, an air valve meansto attach said second rocker arm to the air valve, and manually operatedmeans to rotate said rock shaft and actuate said air valve.

6. In a device of the kind described, s. rotary member, means slidablymounted thereon, a pivotally actuated element arranged to lever arrangedto be moved by'said-sleeve, a In testimony that I claim the foregoing asrock shaft, a rocker arm attached to said my own, I have hereto aifixedmy signatune 10 rock shaft, 9. spring held between said lever in thepresenceof two witnesses. and shill rocker arm, a second rocker arm at-5 tached to said rock shaft, an an valve con- HARRY LARSON trolled bythe movement of said rocker arm, .Witnesses: manually operated means torotate said rock F. R. LEVI,

shaft, and a lockdevioe for sald means. S. A BRIN'roN.

